It sounds like a major reason they've had such terrible conversion rates to the paid version is that nobody could figure out how to actually buy the game. Reme

It sounds like a major reason they've had such terrible conversion rates to the paid version is that nobody could figure out how to actually buy the game. Remember: When people want to give you money, make it as easy as possible. Hopefully they get some better conversion after their update: "There was an update available for the game, and after applying it, an “unlock the full game” message was added under the main logo."